well there are a few options.. one is get the key off the keyboard and check the part underneath to make sure it is ok and another is since laptops have usb ports use a regular keyboard or even buy this roll up rubber keyboard i saw at frys
Get a wet towel and slide it between the keys.
i think its depend on the application. function keys are also use as edit keys.
Your laptop keys turn off after a while if the sticky keys are turned on.
just press the numlook then you can use fn keys
Is by pressing the keys ,for example ALT f4 is Exit
Get a piano tuner to look at it. Or else see if there is anything stuck in the piano that shouldn't be there
Is the keys on a laptop or desktop? Is on a desktop they just pop off real easy and you can replace them with new keys. If it is on a laptop they are a little harder and require some work.
The method of taking keys off a laptop keyboard is different depending on the model. Consult your owner's manual for details.
Broken
Yes most do
Well since you asked this question you must of used the keys on your laptop/computer! So you must of had the sense to count them...Total Keys = 84, but it depends on what computer you have....
A phone is usually much smaller than a laptop, so the keys have to be smaller and fewer :-) The keys also have to be harder, so they are not so easily pressed when you have the phone in the pocket.